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This document explains how the UK’s telecommunications networks are a vital component of the country’s Critical National Infrastructure, the ways in which resilience in both networks and services is achieved and the roles of government and other agencies in the maintenance of this capability.

This document contains information for all those who need to have a basic understanding of the electronic communications environment, ranging from Senior Information Risk Owners (SIRO’s), Business Continuity Managers and Emergency Planners in central, regional and local government as well as businesses part of the CNI.